| 摘要 |
FIELD: printing industry. ^ SUBSTANCE: invention is related to protective element for protected documents. In the first zone of protective element there is the first pigment dye applied, and in fluorescent zone - printing dye, in particular luminescent dye. At the same time printing dye lies outside copying colour space of four-colour printing according to European scale or DIN scale. In the first zone of coverage there is the first composite colour produced from the first pigment dye and printing dye. Specified first composite colour lies outside copying colour space or in edge zone of copying colour space. ^ EFFECT: suggested protected element has high level of protection against counterfeit, with simplicity of identification. ^ 13 cl, 6 dwg |
